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author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-09 13:31:53 +0100 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-09 14:06:51 +0100 |
commit | d5b2a3a4f85ad135123db8fc97ccdbf893546330 (patch) | |
tree | 8bbb47d8916e9396575ffa4e4743a64c4a6b956f /drivers/gpu/drm/i915/i915_drv.h | |
parent | 6cd34b10cd642c15a8e4b2ed5fc4815c12c41d52 (diff) |
drm/i915: Check for a second VCS engine more carefully
To use the legacy BSD selector, you must have a second VCS engine, or
else the ABI simply maps the request for another engine onto VCS0.
However, we only checked a single VCS1 location and overlooking the
possibility of a sparse VCS set being mapped to the dense ABI.
v2: num_vcs_engines() turns out to be reusable and futureproof it so we
never have to worry about this silly bit of ABI again!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190809123153.20574-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
0 files changed, 0 insertions, 0 deletions